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 Three years into the pandemi, Covid-19 is still going strong, causing wave after wave as case numbers soar, subside, then ascend again. But this past autumn saw something new - or rather, something old: the return of the flu. Plus, respiratory syncytial virus (RSV) - a virus that makes few headlines in normal years - ignited in its own surge, creating a "tripledemic". Situs Bola Online The surges in these old foes were particularly striking because flu and RSV all but disappeared during the first two winters of the pandemi. Even more surprising, one particular version of the flu may have gone extinct during the early Covid-19 pandemi. The World Health Organization's surveyllance programme has not definitively detected the B/Yamagata flu strain since March 2020. (Read more from BBC Future about how viruses go extinct.) "I don't think anyone is going to stick their neck out and say it's gone just yet," says Richard Webby, a virologist at St Jude Children&